Pipe-coupling.



J. M. LANGPORD.

PIPE COUPLING.

APPLICATION FILED DEO.12,1911.

LU38,896. Patented Sept. 10,1912.

Q jq -4 Q N r /QD N O Q 1- w 1 N 1% N 15 U HI h -1'-|l| JAMES M.LANGFORD, OI MUL BERRY, FLORIDA.

PIPE-COUPLING.

Specification of Letters Patent.

Application filed December 12, 1911.

Patented Sept. 10, 1912.

Serial No. 665,233.

T 0 all whom it may concern:

Be it known, that I, JAMES MADISON LANG- rono, a citizen of the UnitedStates, ;residing at Mulberry, in the county of Polk and State ofFlorida, have invented certain new and useful Improvements inPipe-Couplings; and I do hereby declare the following to be a full,clear, and exact description ofthe invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to improvements in pipe couplings, and isespecially intended to provide an antifrictional coupling for heavypipes for suction dredges, or similar apparatus where it is desiredto'secure a revoluble joint, which may bereadily turned to the desiredan 1e, and which may be kept suitably lubrlcated and substantiallyair-tight. a

My invention will be understood by reference to the accompanyingdrawing, in which A represents the main pipe connected to the pump, Bthe outer member of the revoluble coupling, C the'inner member of thesame, D an elbow, and E the suction pipe leading to the material to bedredged, or excavated. These various parts, A and B, C and D, and DandE, are connected together by suitable flanges and bolts,. as shown.The member B of the coupling is preferably coned, as at b, to engage theconical face 0 of the member C, and a lubricating groove of is providedto receive lubricant from any convenient source, as from the oil cup F.The member C is shouldered as at 0 and over its cylindrical surface 0are mounted the metal packing ring G, the soft packing rings G, and thepacking rings G of a skeleton type, or permeable to water, which issupplied through the opening 0 in the top of the member C. These packingrings, with the sleeve H, constitute a gland, the packing ringsbeingheld under compression by the bolts I and nuts I. The inner face of thesleeve H is clear of the cylindrical surface of the member C, and thissaid sleeve is recessed, as at h, to receive the roller bearings K,which are held in place and protected from fouling by means of the faceplate L.

It will be readily seen that the coned surfaces 6 and 0 automaticallygrind when turned, and maintain a close fit, and being lubricated, offerlittle resistance when the member C is turned, the further anti-frictloneffect being secured by the rollers K.

Furthermore, by having the chamber between the shoulder c and the sleeveH supplied with water, not only is a lubricating effect secured, butalso an air-tight packing is, secured, which will prevent the sucking ofair through the coupling from the exterior into the pipe A.

It will be obvious that-various modifications might be made in theherein described apparatus, and in the combination and arrangement ofparts, which could be used without departing from the spirit of myinvention.

Having thus described my invention, what I claim and desire to secure byLetters Patent of the United States is 2- =1. In a pipe coupling, the.combination of a fixed plpe with a hollow cylindrical casing securedthereto and provided with 'a conical wearing surface; of a pipeprojecting into said casing and provided with a conical wearing surfaceengaging the wearing surface of said casing, and with a shoulder in rearof said conical wearing sur face, with a cylindrical portion in rear ofsaid shoulder; a series of packing rings mounted exterior to saidcylindrical surface and between it and said casing; a sleeve mountedover said casing with means for causing said sleeve to compress saidpacking rings; and anti-friction rollers inclosed in said sleeve andmounted between said sleeve and said cylindrical surface, with a faceplate secured to said sleeve inclosing the run way therein for saidantifriction rollers, substantially as described.

2. In a pipe coupling,.the combination of a stand pipe with a hollowcylindrical cas-- a series of packing rings mounted exterior to saidcylindrical surface and between it and said casing; a sleeve mountedover said casing, and provided with a flanged end, bolts passing throughsaid flanged end of said casing and said flange on said sleeve,

with nuts mounted on said bolts for com- In testimony whereof, I aflixmy signapressing said packing rings,- antifriction ture, in presence oftwo witnesses rollers lnclosed in said sleeve and mounted JAS MLA'NGFORD between said slee e afnd saidfpylindrical sur- 5 face, andmeans for retainihg the antifric- Witnesses:

tion rollers in the run-Way 1n said sleeve, H. W. PBIMM,

substantially as described. S. WHITFORD.

